71551677211 has 4 divisors (see below), whose sum is σ = 81773345392. Its totient is φ = 61330009032.

The previous prime is 71551677163. The next prime is 71551677271. The reversal of 71551677211 is 11277615517.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 71551677211 - 2¹⁷ = 71551546139 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (71551677271) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5110834080 + ... + 5110834093.

It is an arithmetic number, because the mean of its divisors is an integer number (20443336348).

Almost surely, 2^71551677211 is an apocalyptic number.

71551677211 is a deficient number, since it is larger than the sum of its proper divisors (10221668181).

71551677211 is a wasteful number, since it uses less digits than its factorization.

71551677211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10221668180.

The product of its digits is 102900, while the sum is 43.

The spelling of 71551677211 in words is "seventy-one billion, five hundred fifty-one million, six hundred seventy-seven thousand, two hundred eleven".